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Computing and networking systems have been widely used in almost every sector of society. However, they are limited by their capabilities in terms of security, reliability, performance, and scale-ability. We will discuss the various challenges posed by the design and implementation of the computing and networking systems. We will introduce some major initiatives taken by the National Science Foundation...
As DWDM networks proliferate there is a growing need to address the issue of distributed interdomain lightpath provisioning. Although inter-domain provisioning has been well-studied for packet/cellswitching networks, the wavelength dimension presents many additional challenges. This paper develops a novel hierarchical GMPLS-based framework for provisioning all-optical and opto-electronic multi-domain...
This paper proposes an attack-resilient routing architecture, called cross-layer active re-routing (CARE), for mobile ad hoc networks (MANETs). Different from existing solutions, CARE does not focus on a particular type of attack, but instead takes a fundamentally general approach-it achieves resilience against a wide range of routing disruption Denial- of-Service (DoS) attacks by treating them and...
There is an emerging need for the traffic processing capability of network security mechanisms, such as intrusion detection systems (IDS), to match the high throughput of today's high-bandwidth networks. Recent research has shown that the vast majority of security solutions deployed today are inadequate for processing traffic at a sufficiently high rate to keep pace with the network's bandwidth. To...
Over the last decade, several value-added services have been proposed for deployment in the Internet. IP multicast is an example of such a service. IP multicast is a stateful service in that it requires routers to maintain state for forwarding multicast data toward receivers. This characteristic makes the service and its users vulnerable to denial-of-service (DoS) attacks. One type of attack aims...
In this paper, we define architecture of a system for managing network resources in a hierarchical OSPF routing domain supporting DiffServ, wherein resources in terms of bandwidth are dynamically allocated among data flows, each traversing the domain from an ingress edge router to an egress edge router. Specifically, we consider a bandwidth management system in a hierarchical routing domain, wherein...
Network processors (NP) are designed to provide both performance and flexibility through parallel and programmable architecture, making them superior to general-purpose processors on performance and to hardware-based solutions on flexibility. But NPs also introduce new challenges. It is important to study the limitations of NP architectures so that one can take full advantage of NP resources to achieve...
Networked systems are susceptible to transient overload, which can lead to system crash due to resource exhaustion. In the absence of appropriate mechanisms, a system can enter and persist in a state of livelock during the overload period. This paper presents an evaluation of two mechanisms for livelock control experienced in computers of different capacities in a gigabit network. The first mechanism...
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